Attachment for wheels.



PATENTED MAR. 12, 1907.

P. UNGER. ATTACHMENT FOR WHEELS.

APPLICATION IILBD OCT. 2, 1906.

awn: for,- 114 Zger VI/12x ago xi FRANK nae-En, or eninnseuae,PENNSYLVANlA. i.

ATTACHMENT FOR WHEELS.

Specification of Letters Patent.

Patented. March 12,190.

Application filed October 2, 1906. Serial No- 33'7,155-

hicle-wheels; and the invention hasfoi' its object to rovide a'novcltread adapted to prevent w eels from slipping or sliding over smooth orinclined surfaces. p

. Another object of my invention is-to provide a serrated or toothedtread for wheels and'novel means for detachably securing the same to awheel.

With these and other objects in view which will more readily appearasthe invention is better understood, the same consists in the novelconstruction, combination, and arrangement of parts to be described andthen specifically pointed out in the claims.

, Referring to the drawing forming part of this specification, likenumerals of reference designate corresponding parts throughout theseveral views, in which- Figure 1 is an elevation of a wheel equippedwith my attachment. Fig. 2 is an edge view of the same, illustratinga'hingeof the attachment. Fig. 3 is a similar view illustrating thefastening means of the attachment. Fig. 4 is a fragmentary sectionalview of a wheel and- I its attachment, and Fig. 5 is a perspective viewof a detached clevis used in connection with. the attachment In theaccompanying drawings, I have illustrated a conventional form of wheelembodying a hub 1., spokes 2, aii'elly 3, and a rim ortire 1. Upon thetire i is mounted my improved attachment, which consists of twosemicircular sections 5, having central peripheral grooves 6,intersected by transverse grooves 7, thereby forming two rows ofperipheral teeth or calks 8. The sections are provided with inwardlyextending radially disposed lugs 9 upon each side of said sections toembrace the tire i and telly 3 of a wheel and prevent said sections frommoving laterally -upon the tire 4.

To connect the ends ot the sections 5 to gether, I employ a hinge and adouble clevis,

the hinge comprising a bar 10, pivotally connected to the ends of thesections 5 by pins 1 l.

transverse grooves 7 of the sections 5, said yokes having their endsconnected by a pin or bolt 14 passing under the telly 3 between two ofthe spokes 2. When clamped upon a wheel, it Wlll be impossible for theattach- The double clevis comprises two yokes or straps112, adapted toengage in two of the.

ment to become displaced unless the pins or bolts 11 and 14 are removed.

Bythe novel construction of my im roved attachment the same can beeasily and quickly placed upon a wheel, and when not in use the doubleclevis or yokes 12 and the hinged bar 10 can be removed, whereby thesections 5 can be placed'one upon the other and stored in the vehicle inconnection with which the same is used.

The teeth or calks 8 of the sections 5 are adapted to engage in thesmooth or inclined surface over which the vehicle is traveling andprevent the same from slipping or sliding.

The attachment will be made of light and durable metal and of sizes tofit various types of wheels.

What I claim, and desire to secure by Letters Patent, is

1. An attachment for wheels of the character described, consisting oftwo hinged ried by said sections, and a double clevis adapted to connectthe free ends of said sections together, substantially as described.

2. An attachment for wheels, comprising two semiclrcular sectlons hingedtogether at one end and having peripheral teeth, and means engaging thesections at their free ends to bind them upon a wheel, and comprising a.double clevis one part engaging one section and the other part engagingthe other section, said parts of the clevis spanning the wheel-rim, anda single bolt securing both parts of the clevis to the sections andwheelrlm.

In testimonywhereof I aflix my signature GRUEBELE.

